• ICALEO 2011 Paper #709 (2D Finite Element Modeling of Heat Transfer and Fluid Flow during Multi Layered DMD Laser Process)

    2D Finite Element Modeling of Heat Transfer and Fluid Flow during Multi Layered DMD Laser Process
    Authors:
    Simon Morville, LIMATB; Lorient Cedex France
    Muriel Carin, LIMATB; Lorient Cedex France
    Denis Carron, LIMATB; Lorient Cedex France
    Philippe Le Masson, LIMATB; Lorient Cedex France
    Patrice Peyre, PIMM; Paris France
    Myriam Gharbi, PIMM; Paris
    Cyril Gorny, PIMM; -
    Remy Fabbro, PIMM; Paris France
    Presented at ICALEO 2011

    Derived from laser cladding, the Direct Metal Deposition (DMD) laser process is based upon a laser beam powder melt pool interaction, and enables the manufacturing of complex 3...

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  • ICALEO 2011 Paper #802 (Stabilized Copper Welding by Using Power Modulated Green and IR Laser Beams)

    Stabilized Copper Welding by Using Power Modulated Green and IR Laser Beams
    Authors:
    Andreas Heider, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Axel Hess, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Rudolf Weber, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Thomas Graf, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Presented at ICALEO 2011

    Due to their material properties such as high electrical and thermal conductivity, copper materials are more and more demanded for industrial applications. The same material properties make laser welding of copper a challenging task. Welds in copper at low velocities (v

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  • ICALEO 2011 Paper #803 (Development of New Processes for Welding of Thermal Al-Cu Solar Absorbers using Diode Lasers)

    Development of New Processes for Welding of Thermal Al-Cu Solar Absorbers using Diode Lasers
    Authors:
    Andre Springer, Laser Zentrum Hannover e.V.; Hannover Germany
    Peter Kallage, Laser Zentrum Hannover e.V.; Hannover Germany
    Michael Hustedt, Laser Zentrum Hannover e.V.; Hannover Germany
    Stephan Barcikowski, Laser Zentrum Hannover e.V.; Hannover Germany
    Volker Wesling, Laser Zentrum Hannover e.V.; Hannover Germany
    Heinz Haferkamp, Laser Zentrum Hannover e.V.; Hannover Germany
    Presented at ICALEO 2011

    Flat-plate solar collectors are favorable devices to generate heat from the energy of the sun. The central part of a collector, the s...

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  • ICALEO 2011 Paper #804 (Modelled Dependency of the Direct Absorption on the Keyhole Wall Waviness during 1 Micron- and 10 Micron-Laser Welding)

    Modelled Dependency of the Direct Absorption on the Keyhole Wall Waviness during 1 Micron- and 10 Micron-Laser Welding
    Authors:
    Alexander F. H. Kaplan, Lulea University of Technology; Lulea Sweden
    Presented at ICALEO 2011

    During keyhole mode laser welding the absorption of the laser beam at the vapour capillary, the keyhole, takes directly place by Fresnel absorption and indirectly during multiple scattering and by plasma absorption of the propagating beam. The direct Fresnel absorption of the laser beam mainly at the front keyhole wall is the controllable contribution, which requires better understanding. A mathematical first order model enables to estimate the dependency of the keyhole shape ...

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  • ICALEO 2011 Paper #805 (Dependence of Energy Distribution in the Keyhole on Optical Parameters of the Focusing System in Laser Welding)

    Dependence of Energy Distribution in the Keyhole on Optical Parameters of the Focusing System in Laser Welding
    Authors:
    Martin Sarbort, Institute of Scientific Instruments, AS CR; Brno Czech Republic
    Libor Mrna, Institute of Scientific Instruments, AS CR, Dendera a.s.; Bilovice Nad Svitavou Czech Republic
    Simon Rerucha, Institute of Scientific Instruments, AS CR; Brno Czech Republic
    Petr Jedlicka, Institute of Scientific Instruments, AS CR; Brno Czech Republic
    Presented at ICALEO 2011

    Deep penetration laser welding performed by continuous high-power laser beam is characteristic by creation of a thin capillary, called keyhole, within the welded material and...

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  • ICALEO 2011 Paper #806 (Distortion Control during Laser Beam Welding of Shaft-Hub Joints Within a Process Chain)

    Distortion Control during Laser Beam Welding of Shaft-Hub Joints Within a Process Chain
    Authors:
    Frank Buschenhenke, BIAS- Bremer Insitut fur Amgewandte GmbH; Bremen Germany
    Thomas Seefeld, BIAS- Bremer Insitut fur Amgewandte GmbH; Bremen
    Frank Vollertsen, BIAS- Bremer Insitut fur Amgewandte GmbH; Bremen
    Presented at ICALEO 2011

    The joining of shaft-hub connections is gaining importance in power train applications. The quality demands in abrasion and power transmission are playing a major role. Dimensional as well as repeat accuracies are essential quality criteria, which have to be controlled. The laser beam sources of the new generation permit a high power welding ...

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  • ICALEO 2011 Paper #901 (Hard Facing Engineering Surfaces Using Supersonic Laser Deposition of Stellite-6)

    Hard Facing Engineering Surfaces Using Supersonic Laser Deposition of Stellite-6
    Authors:
    Rocco Lupoi, University of Cambridge; Cambridge Great Britain
    Andrew Cockburn, University of Cambridge; Cambridge Great Britain
    Martin Sparkes, University of Cambridge; Cambridge Great Britain
    Chris Bryan, Zhejiang University of Science and Technology; -
    Fang Luo, University of Cambridge; Cambridge Great Britain
    William O'Neill, University of Cambridge; Cambridge Great Britain
    Presented at ICALEO 2011

    Supersonic Laser Deposition (SLD) has demonstrated the ability to deposit a range of metal coatings on a wide range of substrates, including T...

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  • ICALEO 2011 Paper #902 (A Comparative Study of 3D Laser Surface Modification and the Humping Phenomenon)

    A Comparative Study of 3D Laser Surface Modification and the Humping Phenomenon
    Authors:
    Caroline Earl, The University of Cambridge, TWI Ltd.; Cambridge Great Britain
    Paul Hilton, TWI Ltd.; Cambridge Great Britain
    Jon Blackburn, TWI Ltd.; Cambridge Great Britain
    Bill O'Neill, The University of Cambridge; Cambridge Great Britain
    Presented at ICALEO 2011

    Surfi-Sculpt® is a three dimensional surface modification technique that enables functional features to be formed from a substrate material by repeated swipes of a highly focused power beam. Similar characteristics to the humping weld instability phenomenon have been observed in the Surfi-Sculpt® process a...

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  • ICALEO 2011 Paper #903 (Feedback Control of Processing Temperature in Laser Beam Hardening of Production Dies)

    Feedback Control of Processing Temperature in Laser Beam Hardening of Production Dies
    Authors:
    Hongping Gu, Stronach Centre for Innovation (SCFI), Magna International; Aurora ON
    Boris Shulkin, Stronach Cenre for Innovation (SCFI), Magna International; Aurora ON Canada
    Presented at ICALEO 2011

    Automotive draw and line dies are often subject to high wear and tear in the areas with convex radii during volume production and require heat treatment to improve the mechanical properties in these areas in order to increase the operating life of the die. Laser beam transformation hardening has been proven to be a viable technology for such type of heat treatment. It has been demonstrated th...

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  • ICALEO 2011 Paper #904 (Thermal Modification of Zinc-Aluminum Coated Steel Using Lasers)

    Thermal Modification of Zinc-Aluminum Coated Steel Using Lasers
    Authors:
    Remya Mathew, CAST CRC, Swinburne University of Technology; Hawthorn,Victoria Australia
    Paul Stoddart, Industrial Research Institute Swinburne, Swinburne University of Technology; Melbourne Australia
    David Nolan, Bluescope Steel Limited; New South Wales Australia
    Yvonne Durandet, CAST CRC, Swinburne University of Technology; Melbourne Australia
    Presented at ICALEO 2011

    In many markets, Zn-55%Al-1.6%Si coated steel products are an important alternative to traditional galvanized products in the building industry. They combine the barrier protection of aluminium with the sacrificial prot...

    $28.00

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